Dental tool-guard.



J. H. ABBOTT.

DENTAL TOOL GUARD.

APPLICATION FILED JUNE 16, 1911.

Wwwzemo UNITED STATES PATENT @FFIQIQ.

JAMES HERMAN ABBOTT, Q PHILADELPHIA, PENNSYLVANIA.

DENTAL TOOL-GUARD.

To all whom it may concern:

Be it known that I, JAMES I-InmrAN ABBOTT, a citizen of the UnitedStates, and a resident of Philadelphia, Pennsylvania, have invented acertain new and useful Dental Tool-Guard, of which the following is aspecification.

The purpose of my invention is to provide a removable cover for allparts of the guard coming in contact with the patients mouth, making thecover of soft material which can be readily sterilized and which can beretained by simple and effective means.

Figure 1 is a side elevation of a structure embodying my invention. Fig.2 is an end elevation, partly broken and in section, of the structureshown in Fig. 1. Fig. 3 is a perspective of the guard and support ofFig. 1 without the cover. Fig. 4 is a bottom plan view of the structureof Fig. 3. Fig. 5 is a perspective view of the removable cover for theguard.

Similar numerals of reference indicate like part-s in the drawings.

1 designates an attachment adapted to be mounted upon the hand piece 2of. the dental drill by means of spring clips 3, 8 and 4, 4, preferablyformed from lateral extensions of the body of the attachment and whichare made of proper size to fit the dental hand pieces upon the market.Each of these dental hand pieces is provided with a pin or stud I causemy guard to surround and, preferably, to engage this pin or stud with ayielding pressure from the circumferential spring action of the parts 4,4. By recessing the faces of the parts 4, 4 at 6, I provide a seat forthe pin or stub between the parts 4, 4 where they are spaced at 7, sothat the attachment may be pressed to place by longitudinal movementonly and may be held yieldingly against rotation as well as againstlongitudinal movement.

At any suitable point in the connection 8 between the parts 3, 3 and 4,4 of the attachment 1, I form a socket 9, preferably by lateral andreversely turned extensions 10, 10 from the connection 8, and secure arod Specification of Letters Patent.

Application filed June 16, 1911.

Patented July 15, 1913. Serial No. 633,520.

or strip 11, making it longitudinally adjustable in this socket andsecuring it therein by means which may include any suitable fastening12, reinforcing the socket for the use of the fastener at 13, ifdesirable.

Near the outer end of the attachment, and in approximate line with theconnection 8, I provide lateral extensions 14, reversely turned to makean additional socket 15 for the rod or strip 11, and pass the guard rodor strip 11 through the openings 15 and 9, retaining it preferably byfriction due to spring pressure of the rod or strip, which, for thispurpose, is slightly bent as at 11. The frictional retention thussecured, in whatever position of adjustment, may be re placed orreinforced by the fastening 12.

I extend the rod or strip 11 angularly at 16 to connect with the guard17 of arc form, most desirably less than a semicircle. This guard member17 forms the frame or support about which I stretch or secure acover 18preferably of elastic material such as rubber. I make this coverremovable in order that it may be omitted where free view of the rotarymember guarded is desired and for convenience of sterilization. By thismeans also I secure a non-metallic protection for the support 17 whichis soft and warm to the touch and free from all of the objectionspresent in metallic parts.

In operation the attachment 1 is moved longitudinally to place, theparts 4 surrounding the pin 5 and preferably circumferentially springingagainst it. The guard rod 11 and the spindle 19 of the disk, brush orother rotating member 20 may be insert-- ed together with the cover 18in place, or the rod and spindle may be inserted inclependently and inany preferred order, after which the cover 18 is put in place.

In practice I prefer to supply but a single attachment 1, withadditional guard supports 17 to fit different sized disks or rushes orsurround them to different extents. These supports are provided withcone spondingly different sized parts or extensions 16. Except where itis desired to cover difi'erent extents of surface of the brush, thedental hand piece in proximity to a rotating same cover 18 may be usedfor varlous sizes pulley, and a flexible cover, adapted to be 10 ofmount 17. detachable, secured to the guard support to Having thusdescribed my invention, What partly surround the rotating pulley. 5 Iclaim as new and desire to secure by Let JAMES HERMAN ABBOTT.

tei's Patent is:- Witnesses:

In a device of the character stated, a guard WILLIAM STEELL J AoKsoN,support, means for mounting it upon a HELEN J. KAUFFMAN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, I). C.

